OK – they have two: 10-180ohms and 240-33ohms. Which?  I’m assuming that the 240-33 ohm is 0 psi at 240 ohms and 100 psi at 33. Can I calibrate the EM-2 to understand backwards increments (i.e zero offset 240 and increments of whatever 1024-207 is times -1)?

 

Oh BTW – how does the EM-2 get RPM?  The Tach Sense input is for “Lycoming Only – from Mag Lead”.  Is it getting RPM from the EFI primary injector duty cycle? Tracy?

 

 

Tracy recommends VDO 0-100 psi for fuel and oil.  I had a 0-80 VDO on hand, and was able to calibrate that to the EM-2; no problem.

 

Al